Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
10BASE-T LAN MAGNETICS
2001 Bel Fuse Inc. Specifications subject to change without notice. 09.01
LM00504
Single Port Transformer Modules
ELECTRICAL SPECIFICATIONS AT 25 C
Transformer turns ratio RX 1CT : 1CT and
TX 1CT : 1.41CT
Single-port modules available with and without
common mode chokes
Utilizes standard packaging
Low profile, surface mount packaging rated to 225 C
peak IR reflow temperature
Operating temperature 0 to 70 C
Minimum interwinding breakdown voltage of 1500 Vrms
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L5-15
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
2001 Bel Fuse Inc. Specifications subject to change without notice. 09.01
10BASE-T LAN MAGNETICS
LM00504
Single Port Transformer Modules
SCHEMATICS
A553-0716-00
S553-0716-00
S553-5999-08
1
2
3
6
7
8
9
10
11
14
15
16
1CT : 1CT
1CT : 1.41CT
RX
TX
S556-5999-26
S553-5999-37
1
2
3
6
7
8
9
10
11
14
15
16
1CT : 1CT
1CT : 1.41CT
RX
TX
1
2
3
6
7
8
9
10
11
14
15
16
1CT : 1CT
1CT : 1.41CT
Filter
RX
TX
1
2
3
6
7
8
9
10
11
14
15
16
1CT : 1CT
1CT : 1.41CT
RX
TX
L5-16
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
10BASE-T LAN MAGNETICS
2001 Bel Fuse Inc. Specifications subject to change without notice. 09.01
LM00504
Single Port Transformer Modules
0.500
[12.70]
max
0.375
[9.53]
max
0.285
[7.24]
max
0.018 0.002
[0.46 0.05]
0.225
[5.72]
max
0.050
[1.27]
0.015
[0.38]
0.350 0.010
[8.89 0.25]
0.008 - 0.012
[0.20 - 0.30]
0.035
[0.89]
4 nom
0.025
[0.64]
0.070
[1.78]
0.050
[1.27]
0.425
[10.80]
Suggested PCB Pad Layout
Dimensions are in inches [millimeters].
Standard dimension tolerance is 0.005 [0.13] unless otherwise noted.
0.004 [0.10]
MECHANICALS
S553-0716-00
S553-5999-08
S553-5999-37
0.325
[8.26]
0.285
[7.24]
max
0.100 [2.54] typ
0.800
[20.32]
max
0.210
[5.33] max
0.120
[3.05]
min
0.018
[0.46]
ref
0.045
[1.14]
ref
0.015
[0.38]
min
0.180
[4.57]
max
100
90
0.008 - 0.012
[0.20 - 0.30]
Dimensions are in inches [millimeters].
Standard dimension tolerance is 0.005 [0.13] unless otherwise noted.
L5-17
A553-0716-00
CORPORATE
Bel Fuse Inc.
206 Van Vorst Street
Jersey City, NJ 07302
Tel
201-432-0463
Fax
201-432-9542
www.belfuse.com
FAR EAST
Bel Fuse Ltd.
8F / 8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel
852-2328-5515
Fax 852-2352-3706
www.belfuse.com
EUROPE
Bel Fuse Europe Ltd.
Preston Technology Management Centre
Marsh Lane, Suite G7, Preston
Lancashire, PR1 8UD, U.K.
Tel
44-1772-556601
Fax 44-1772-888366
www.belfuse.com
10BASE-T LAN MAGNETICS
2001 Bel Fuse Inc. Specifications subject to change without notice. 09.01
LM00504
Single Port Transformer Modules
MECHANICALS
S556-5999-26
0.500
[12.70]
max
0.375
[9.52]
max
0.285
[7.24]
max
0.018 0.002
[0.46 0.05]
0.225
[5.73] max
0.050
[1.27]
0.003 - 0.010
[0.08 - 0.25]
0.350 0.010
[8.89 0.25]
0.008 - 0.012
[0.20 - 0.30]
0.035
[0.88]
4 nom
0.025
[0.64]
0.070
[1.78]
0.050
[1.27]
0.425
[10.80]
Suggested PCB Pad Layout
Dimensions are in inches [millimeters].
Standard dimension tolerance is 0.005 [0.13] unless otherwise noted.
L5-18
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